Blood Type O, Watermelon Chest Housekeeper: Friends Cheol Min and Jae Hyuk meet and talk to each other after a long time. Jae Hyuk said that the domestic helper who recently came to work at his house is strange. He said he was worried because she couldn't do the housework. When Jae Hyuk said she seemed to be trying to seduce him, Cheol Min tells the innocent Jae Hyuk how to get around her. Can Jae Hyuk succeed in having sex with a beautiful housekeeper?